Lidocaine dosing
Local Anesthetics · 1% (10 mg/mL) · Infiltration / Nerve Block
Calculated, not generatedWeight-based dose
| Dose | Per kg | For 70 kg |
|---|---|---|
| low | 3 mg/kg | 210 mg |
| standard | 4.5 mg/kg | 315 mg |
| high | 7 mg/kg | 490 mg |
Max without epi: 4.5 mg/kg. Max with epi: 7 mg/kg.
Renal & hepatic adjustment
- Severe (Child-Pugh C)Amide local — hepatic clearance is reduced; lower infusion/maximum dose to avoid systemic toxicity (LAST).
Source: ASRA LAST guidance
Onset, duration & pearls
Onset1-3 min
Duration60-120 min (with epi)
Side effects: CNS toxicity (tinnitus → seizures), Cardiac arrest at high doses.
- Amide type, also IV antiarrhythmic (1-1.5 mg/kg)
- IV lidocaine blunts airway reflexes at intubation
Evidence A · Extensively studied local anesthetic
More local anesthetics
Get the exact dose for your patient
Vigil computes Lidocaine for your patient's actual weight — and adjusts for renal or hepatic impairment automatically, with the cited rationale. The number is calculated from a verified database, never guessed.
Decision support for licensed clinicians — not a substitute for clinical judgment. Always verify against the package insert and the patient in front of you.